Big Block Chevy 396 454 Block Hugger Header in black finish is a bolt-on exhaust header made of mild steel. It includes collectors, gasket, and mounting hardware, and is painted with temporary black paint. This performance part is designed for gasoline vehicles and is placed on the front of the vehicle. This header is specifically designed for Big Block Chevy engines, providing a durable and high-quality solution for enhancing exhaust flow and performance.